doerfer



1. A. 'DoERFR.

VENDING DEVICE. APPLICATION man ocms, I911. 1 1 5,0 1 4 1 Patented Sept.2, 1919.

4 SHEETS--SHEET I.

J. A. DOERFER.

VENDING DEVICE. APPLICATION FILED oer-25.1911.

4 SHEETS SHEET 2.

a? a L w 14 7 LA. DOERFER. VENDING DEVICE.

v APPLICATION FILED OCT-25, I9H- 1,315,014. PatentedSept. 2,1919.

J. A. DOEHF ER. VENDING DEVICE. APPLICATION FILED coma, I917.

Patented Sept. 2, 1919.

4 SHEETS -SHEET 4.

I UNITED STATES PATENT OFFICE.

' Jaime. rename, or ro'a'rnmn, cancer.

vnnnme DEVICE.

Specification of Letters Patent.

Application filed October 25, 1917. Serial to. 198,551.

To all whom it may concern:

. Be it known that I, JOHN A. DoER'rnR, a citizen of the United States,residing .at Portland,'State of Oregon, have invented certain new'anduseful Improvements in Vendin Devices, of a speci cation.

'My invention relates to vending devices in general, andparticula'rly tothat class of such devices as are usedfor dispensing which thefollowingis a measured quantities of liquids, it being especially adapted for usein dispensing gasolene at automobile filling stations,-an

compact, cheap. and reliable form of construction.

I accomplish the above objects and other desirable results by meansofthe construction illustrated in the accompanying drawings, likecharacters-of reference indicating like v parts throughout the severalviews thereof, and inwhich:-

Figure 1 is a side elevation of my device,

the casing being broken away to best illustrate the construction. V

Fig. 2- is a plan view of my device,- parts being broken away to bestillustrate the oonstructi-oni Fig. 3 :is'e diagrammatical perspectiveView of the coin actuated levers.

Fig, 4 is a diagrammatica'l perspective View of the whole measure latch.

Fig. 5 is a plan view of the fractional measure device assembled,certain parts being broken away for illustration. Fig. 6 is an elevationof the' gear and ratchet operating the fractional measure device.

' In general my invention comprises, first a plurality of slotsandlevers corresponding respectively to coins of various denominations;second means whereby either of said levers independently maysimultaneously close a switch and thus start a motor, and

also put' the fractional measure device into operating'position; third,means whereby said motor may be allowed to attain a predetermined speedand then place a' pumpplunger into operation; fourth, means whereby saidpum plunger may make a predetermined num' r of complete strokes and thena fractional stroke'governed by said fractional measure device; andfifth, means whereby at the completion ofsaid fractional stroke of theplunger said 'fract onal measure device may open saidswitch and releasesaid coin operated leversto return to their initial position.,-

In order that coins of various denominw tions mayfst-a-rt the mechanismI provide a plurality of coinslots 7, 8, 9, 10 and 11, into which thesuitable coin is placed, each of said slots being adapted to receiveonly its respective coin, as nickles, dimes, quarters, etc. 1

- Corresponding to each slot is a hand rod 12, which, upon being pushedcloses the lower end of its respective slot,- and which is held in itsinitial position by a spring 113, as shown in Fig. 1..

.In alinement with each of said hand rods 12 is a corresponding push rod14, each of said rods 14 starting at the innermost edge of itsrespective coin slot and'therefrom extendingiiiwardly, a

spring'15 being adapted to hold the rod 14 in its lnitial position, asshown in.; Fig. 1.

When said rods 14 and hand'rods 12 are each in their initial positionsthere is a space intermediate the respective ends thereof, said spaceregistering with'the lower end Patentedsept. 2, 1919.

of the respective coin slot, so that an insorted coin slides down theslot and comes to rest upon its face intermediate Isaid hand rod 12andsaid push rod 14, the'icoin thus forming an operative-member between thehand rod 12 and the push rod 14, whereby a push upon said hand rod willoperate said push rod.

Each of said rods 14 1s connectedby links 16 to a switch blade 17.

As shown in the drawings there is a switch for each of said rods 14, butit is evident to one skilled in the art that the several rods may bearranged to operate the H same switch if desired.

\ The swi h is closed by the operation of the rod through the agency ofthe inserted coin, and thus, started.

Upon each. of rods 14is a cam 19 which the electric motor 18 is.

coiiperates with a latch 20, said cam holding said latch open. until themovement of the rod 14 has accomplished the closing of the switch,whereupon said latch engages the end of said cam and thus holds the rod14 termined speed it will lower stem'25, thereby releasing lever 26,which has been restmg upon the upper end of the stem 25, as shown inFig.1.

Lever 26 will then be caused to drop by weight 27 thereon, and by meansof shaft 28 and arms 29 thereon Wlll engage the two members of clutch30. One member of clutch 30 is slidable but not rotatable upon motorshaft 31, and coacts with arms 29 to be longitudinally moved therebyupon said shaft 31.

The other member of clutch 30 is secured to a worm 32 rotatably mountedupon shaft 31, as shown in Figs. 1 and 2.

Said worm 32 meshes with a worm gear 33, which gear also meshes withrack teeth upon pump plunger 34, as shown in Fig. 1.

By this mechanism the pump is not started until the motor has attained apredetermined speed, regulated by the governor, thereby overcoming thelosses of dispensed liquid incident to the slow movement of the pumpplunger when starting.

In order that an exact measure of liquid may be delivered by one strokeof said pump plunger I mount thereon a pin 35 which will contact withlever 26, and by raising said lever will release clutch 30 when theproper in Fig. 4.

' teeth upon measure of liquid has been delivered.

Lever 26 when thus raised enters and is held by a latch 36, shown indetail in Fig. 4.

Said latch consists of forks 37 between which lever 26 enters, and atongue 38 which is forced outward by the entering lever 26 and is thenreturned beneath said lever by the weight of reach rod 39 upon bellcrank 40 which coiiperates withlatch 38, as shown When clutch 30 is thusthe completion of the plunger 34, said plunger is returned to itsinitial position by means of weight 41 attached to cord 42, which cordis wound upon the hub of gear 43 which meshes with rack pump plunger 34,as shown in Figs. 1 and 2.

When plunger 34 returns to its initial position pin 35 contacts withlever 44 thereby withdrawingtongue 38 and releasing lever 26 from latch36, thus reengaging clutch 30 which then causes plunger 34 to. makeanother stroke.

disengaged upon stroke of pump Upon that end of fractional measuredevice to be hereinafter described.

Each catch 20 is in the form of a bell crank, one arm of which forms thecatch proper, and the other arm of which is pivotally attached to acorresponding ,j rod 46, which rods are slidably mounted in bearings 47and 48, as shown in Figs. 1, 2 and 3.

Mounted upon each of rods 46 is a collar 49, and intermediate saidcollar and bearing 47 is a spring 50, for the purpose of keeping itsrespective rod in its initial position with the catch 20 in contact withits respective cam 19, as shown in Fig. 1.

Each of rods 46 has fixed upon the end thereof opposite said catch 20, awedge shaped contact piece 51, as shown in Figs. 1 and 3.

A clutch shifter 52 is pivotally mounted at 53, one arm of which engagesa peripheral groove 54 in one end of a sleeve 55 freely mounted upon ashaft 56, as shown in Figs. 1 and 2, and in detail in Figs. 3 and 5.

Pivotally mounted upon the opposite arm of shifter 52 is a plurality ofconnecting rods 57, there being as many of said rods as there are coinslots.

The opposite end of each of said connectshown in-Figs. 1 and 2, and indetail in I Flg. 3.

sleeve 55 opposite groove 54 is one member of a clutch 59, the

other member of said clutch being secured to a shaft 56, as shown inFig. 5, and intermediate said clutch members is a spring 60 adapted tokeep said clutch members initially out of contact.

hen a coin has been inserted in the respective slot and the respectiverod 14 has been moved so that cam 19 has passed over catch 20, thespring 50 will cause rod 46 to move toward shaft 56, thereby causingcatch 20 to engage the end of cam 19, thus holding rodv 14 in itsadvanced position against spring 15, and with the switch 17 closed.

y means of its respective pin 58 and connectin rod 57 the movement ofone of rods 46 by 1ts respective spring 50 causes clutch shifter 52 tomove, thereby engaging the members of clutch 5 9.

The movement of clutch shifter 52 by any one of connecting rods 57causes all the other connecting .rods to move in unison therewith, whichthey are allowed to do without moving their respeotive rods 46 by meansof slots 61 in said connecting rods 57, as shown in detail in Fig. 3.

The engagement of clutch members 59 is thus accomplished by mechanismsindependentlyoperated through the agency of the coin inserted, whichcoin becomes temporarily a member ofthe operating mechanism,

and the wedge or contact piece 51 corre-- sponding to said coinis movedtoward shaft 56 and held-in such moved position by its respective spring50, all the other contact pieces remaining in their initial positions.

en the coin has performed Its function as a temporary member of theoperating mechanism, it is released by the return:

movement of hand rods 12, and falls into coin box 62, shown 'in Figs. 1and 2.

The engagement of clutch members 59 secures sleeve 55 upon shaft 56,which shaft is rotated in the direction of the arrows.

To rotate shaft 56 I provide a gear 63 freely mounted thereon andmeshing with a- .change gear 64.

Said change gear 64 meshes with a gear upon shaft .65, upon the oppositeend of which is a gear 66 meshing with the rack teeth upon pump plunger34.

By thistrain of gears the upward movement of plunger 34 rotates gear-63according to the arrowsshown on shaft'56, and said shaft is also rotatedby ratchet'teeth 67 with-.-

arms 70, there being one of said arms to correspond respectively to eachcoin slot and 55 an arms 70 rotate.

sleeve 55 is operated from the plunger 34,

contact piece 51, and said arms have various angular relations one vwithanother, as shown in Fig. l, and in detail in Fig. 5.

Rotatably mounted upon each of said arms is a roller 71. adapted tocontact with its res tlve contact plece 51, as the sleeve As has beenpreviously described, the

and the angi ilar'position of the various arms 70 upon said sleevetogether with the gear ratio between plunger 34 and gear 63 is suchthatwhen the exact amount of liquid called for by the cein inserted hasbeen delivered, the respective roller 71 ,will contact with its contactpiece 51 and force the same away from the 56, thereby releasing catch 20and allowing rod 14 to return to its initial ppsltioi and open theswitch 17, "thus stopplug themotor 18 and bringing the entire mechamsmto rest.

.W hen rod 14 returns to its initial position pm 58 moves to that end ofslot 61 farther removed from shaft 56 which frees rod 57 and shifter 52,and allows spring to disengage the-members of clutch 59. Sleeve 55 isthen free upon shaft 56 and is returned to its initial position bymeans'of welght 72 hung from a cord 7 3 which o-pe'rates upon asheave-74 secured to sleeve 55, as shown in Fig. 1.

An arm 7 5 upon that member of clutch 59 which is secured to sleeve 55contacts with a stationary rest 76 when said sleeve has returned to itsinitial position.

The overnor 21 then causes rod 25 t0 rise and li members of clutch 30,whereupon weight 41 causes plunger 34 to lower into its initialposition, when the mechanism is set for another. operation upon theinsertion ofa coin.

By means'of this mechanism the plunger 34 will make several strokeswhile the sleeve 55 is making a partial revolution, and the plunger willbe stopped when the proper roller 71 contacts with its respectivecontact piece 51, which latter was moved toward shaft 56 into a positionfor contact with roller.71,.as shown in dotted lines in Fig. 1,

, by the operation of hand rod 12 after inserting the coin in its properslot.

- he gear 66 may be made of such a size as to allow the plunger 34 tomake as many full strokes as desired and then any fraction of a strokebefore bei stopped as above described. and thus, by simply chang-- ingthe gear ,66 the mechanism may be set to compensate for the fluctuation1n price of the liquid being dispensed, so that the amount deliveredalways exactly corresponds in value to thecoin inserted.

lever '26, and thus disengage the My invention may be made of any sizeand constructed of any materials deemed convenient and suitalble foraxdevice of this character, and while I have illustrated and described aform of construction and arrangement of parts found desirable when-m-aterializing my invention, I wish to in elude in thisv applicationfor Letters Patent all mechanical equivalents and substitutes that mayfairly be considered to come within the scope and purview of myinvention as defined in the appended claims.

Having described my invention so that 7 others skilled in the art may beenabled to construct and use the same, what I clalm as new and desire tosecure by Letters Patent 1s whereby said governor will connect saidmotor'to saidplunger when said motorhas attained a predetermined speed.

strokes and fraction thereof.

1. In a device for vending liquids; a motor; a governor; a pump plunger;means .3. In a device for vending liquids; a motor; coin controlledmeans for starting said motor; a pump plunger; means whereby said motormaybe connected to said plunger when the former has attained apredetermined speed; means whereby the said plunmotor may-beautomatically stopped when said plunger is thus disconnected.

4. In a device for vending liquids; a motor; coin controlled means forstarting said motor; a pump plunger; a gear train intermediate saidmotor and said plunger; a clutch intermediate said gear train and saidmotor; a governor controlling the speed of said motor; means wherebysaid governor may engage said clutch when said go-vernor attains apredetermined speed; means whereby said plunger may disengage saidclutch upon the completion of each stroke of said plunger; and means toreturn said plunger to its initial position upon the release thereby ofsaid clutch.

o. In a device for vending liquids; a motor; coin controlled means forstarting said motor; a governor connected tosaid motor; a train of gearsintermediate said plunger and said motor adapted to operate said plungerfrom said motor; a clutch connecting said gear train to said motor; alever operating said clutch; a member intermediate said lever and saidgovernor whereby said governor regulates and determines the position ofsaid lever; means whereby said plunger may disconnect said lever fromsaid member, and move the former to disconnect sai-d clutch;.a latch tohold said lever after the same hasbeen moved by said plunger;

means to return said plunger to its initial position after said clutchhas been released thereby; and means to release said lever from saidlatch when said. Eplunger arrives at its initial position.

' tor; a

6; In a device for vending liquids; a mopump plunger; a gear trainintermediate said motor and said plunger; a clutch in said gear train; agovernor; means whereby said governor may engage said clutch; meanswhereby said plunger may disengage said clutch at the completion of onestroke of said plunger; means to return said plunger to its initial"position; meansto retain said clutch disengaged and uninfluenced by saidgovernor while said plunger is returning to its initial position; andmeans to reestablish connection between said clutch and said governorwhen said plunger arrives at its initial position.

7; In a vending device; a plurality of coin controlled push rods; acatch for each of said rods; a plurality of push rods, each operatingone of said catches; a measuring device; a clutch operating saidmeasuring device; a clutch shifter; a plurality of reach rods, allpivotally connected to said clutch shifter and eachslidably connected toits respective one of th last mentioned push ro s.

8. In a vending device; a motor; a coin controlled motor startingdevice; a latch to retain said device in operating position; a rotarymember; arms secured to said member; contact pieces corresponding toeach of said arms; means whereby when a predetermined amount of materialhas been delivered a certain one of said arms will contact with itsrespective contact piece; and means whereby said contact piece willoperate said latch to release said motor starting device.

9. In a device for vending liquids; a pump plunger; a shaft; means torotate said shaft from said plunger; a member freely mounted upon saidshaft; arms secured to said member; a clutch to secure said member uponsaid shaft; coin controlled means to simultaneously operate said plungerand said clutch; contact pieces cooperating with said arms; meanswhereby contact of one of 'said arms with its respective contact pieceand release said means to return said plunger to its position; and meansto return said mounted member to its initial posiwill stop said plungerclutch; initial freely tion.

In Witness whereof I claim the foregoing as my'own, I hereunto afiix mysignature in the presence of two subscribing witnesses, at Kent, countyof Sherman, State of Oregon, this 29 day of August, 1917.

JOHN A. DOERFER. Witnesses:

FRED HAYNES, HENRY SOHADEWITL.

